i barack hussein obama do solemnly swear. >> i barack hussein obama, do solemnly swear. >> that i will faithfully execute. >> that i will faithfully execute. >> the office of president of the united states. >> the office of president of the united states. >> and will, to the best of moo i ability. >> and will, to the best of my ability. >> preserve, protect and defend. >> preserve, protect and defend. >> the constitution of the united states. >> the constitution of the united states. >> so help you god? >> so help me god. >> congratulations mr. president. >> thank you, mr. chief justice. thank you so much. thank you, sweetie. [ applause ] hey. thank you. >> i'm so happy. >> good job, dad. >> i did it. >> all right. thank you, everybody. come on. >> all right. you heard him say, i did it. that was perfect right there. jeffrey toobin. he looked down, the chief justice, had his notebook, note card in front of him. >> that's different. he did not have the card four years ago in either ceremony. he did it both times. >> he's famous for his memory. >> when he was an advocate at the supreme c